/Engine/Plugins/Experimental/GeometryScripting/Source/GeometryScriptingCore/Public/GeometryScript/ShapeFunctions.h
Get the Center point and X/Y/Z Dimensions of a Box (full dimensions, not Extents)
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintPure, Category="GeometryScript|Shapes|Box", Meta=(ScriptMethod)) static void GetBoxCenterSize ( FBox Box, FVector & Center, FVector & Dimensions )